Are you familiar with historical evidences related to this dispute?
http://www.mukto-mona.com/Articles/ajoy/asi_report_babri.htm
Since you asked for archeological evidence.
Events related to disputed site at Ayodhya
http://www.expressindia.com/fullstory.php?newsid=50093
PS-a lot of the resources relating to Ayodhya esp in the West are from a blatantly pro-Muslim point of view,while some are from real nauseating Hindu extremist groups,so one needs to be doubly sure of what he is looking for.